Opium rhymes with:
europium, europium, abiam, ad-nauseum, alluvium, ammonium, ankerium, aquarium, atrium, auditorium, axiom, bacterium, barium, beryllium, byzantium, cadmium, calcium, capernaum, cesium, chriptosporidium, chromium, colloquium, compendium, condominium, consortium, cranium, crematorium, cryptosporidium, delirium, deuterium, didinium, dilithium, disequilibrium, elysium, emporium, equilibrium, europium, fermium, gallium, geranium, gilliam, gonium, gymnasium, hafnium, harmonium, helium, herbarium, hoium, holmium, honorarium, idiom, indium, iridium, lawrencium, linoleum, lithium, magnesium, medium, merriam, millennium, minium, miriam, moratorium, myocardium, myriam, mysterium, nephridium, neptunium, niobium, nobelium, odiaum, opprobrium, osmium, palladium, pandemonium, paramecium, pentium, petroleum, planetarium, plasmodium, plutonium, podium, polonium, potassium, premium, presidium, promethium, protium, psyllium, pulliam, radium, requiem, rhodium, selenium, sodium, stadium, strontium, superpremium, symposium, tedium, tellurium, thallium, thorium, titanium, tritium, uranium, valium, vanadium, yttrium, zirconium
Opium sounds like:
o'banion, o'bannon, obama, obanion, obannon, obon, offen, open, opheim, opine, opinion, oppenheim, oven, ovum